Well-boring machine



r 2 Sheets-Sheet 2. Gr. SJ BARTHOLOMEW.

WELL BORING MACHINE. j

Patented-Dec. 17, 1889.

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N 0 I E I :0 V w kwvxo 0 Eu I l U Jh j P =5 1 d V Wimsssss I I'm/577m? UNITED STATES lROVE S. BARTIIOLOMEIV, OF GARVANZA, CALIFORNIA.

WELL-BORING MACHINE.

SPECIFICATION forming part of Letters Patent No. 417,352, dated December 17, 1889.

Application filed May 29, 1889. Serial No. 312,659. (No model.)

To all whom it may concern.-

-Be it known that I, GROVE S. BARTHOLO- MEW, a citizen of the United States, residing at Garvanza, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Well-Borin g Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification. r V

Figure 1 of the drawings represents a side elevation of my improved machine. Fig. 2 is a vertical section of the upper part of the machine, taken longitudinally through the gearing-carriage. Fig. 3 is a horizontal section taken atline 00 0c of Fig. 2, showing the upper plate of the gearing-carriage andits connection with the guide-posts of the frame. Fig. 4 is a central vertical section of the cylindrical drill-guide and the tubular drill-shaft, showing the connections therewith of the drillblade and clamps. Fig. 5 is a transverse section'taken at line to w of Fig. 4:, showing the entire circumference of the drill-guide and its connections with the drill-shaft and drill.

Fig. 6 is a transverse section of the drill-guide, taken at a line indicated by z z in Fig. 4.

My invention relates to hydraulic Well-boring apparatus.

The object of my invention is to secure more complete control over the operating mechanism of the drill to provide means whereby the unnecessary removal of earth is avoided and the well made of uniform size.

The operating mechanism which I employ is connected with a suitable frame AB C D", a cross-beam E,-between which and sill O the vertical posts D D are secured to serve as ways for the carriage F F, in which gear; wheels G G are journaled.

Upon the frame a Windlass H is located with its rope running over sheave I, j ournaled in bearings secured to frame-piece'D", and thence down to the gearing-carriage F, to which it is attached.

A horizontal driving-shaft J, journaled in bearings 011 frame-pieces AD, has a belt-pulley K on its outer end, and a beveled gearwheel L on its inner end, which works in either of the beveled gear-wheels M N, ac cording to the adjustment of the square shaft PATENT OFFICE.

0, through the medium of the lever to and screw 12. Shaft O, which is rectangular in cross-section, is journaled in boxing secured to beam E and sill C, but is free to move vertically to bring either of gears M or N in mesh with gear L. Gear-wheel G has asquarc hole through which shaft 0 passes freely when the carriage F F is descending or being elevated. The drill-shaft P is formed of sections of tubing, the upper section of which is journaled in carriage-frame F F, and gearwhcel G is keyed to said shaft, and the carriage with its gearing, together with the drillshaft P and its appendages, move vertically together as the drill descends when at work, the gear-wheel G sliding down upon its square shaft 0. A water chest or receiver Q is secured by means of brackets Rto the lower side of the gearing-carriage F, and the shaft P, which is perforated to admit the water from the chest Q, passes through the latter, which has packing to prevent leakage around the shaft. The hose or pipe S, which communicates with chest Q, is connected at its opposite end to a force-pump T, by which water is forcibly supplied to the drill-tube P and the drill U. The several sections of drilltube P are connected by male and female screws, and when the drill has been driven down the length of a section the coupling or screw joint at X will be loosened and the carriage F F will be elevated, and an additional section of the tubular shaft P will be connected to lengthen said shaft.

liability of the earth at the sides of the well being washed out by the force of the water escaping from the conduit which delivers the water under pressure to the bottom of the well, and there is a liability that the ascending stream will wash away the walls of the Well around the working parts ofthe drill, and thereby enlarge the well unnecessarily, so that the guide for the drill is not held in line by the sides of. the well and the drill veers from its vertical course. It has been proposed to avoid this difficulty by journaling the well-casing in a boring-head attached to a water-tube adapted to serve as the drillrod for turning such boring-head. Thiscontrivance, however, is objectionable, in that 7 78.5 n. In hydraulic well-boring devices there is a the well-casing is liable to cramp and bind the boring-head, thus causing great friction and preventing the proper operation thereof. Such devices are also objectionable in that the boring-head is necessarily allowed to remain in the well at the bottom of the wellcasing after the well is completed. I avoid these difficulties by surrounding the lower end of the hydraulic supply-pipe or drill-tube P with a short sheath or cylinder Y, open at top and bottom and through its entire length, only leaving an annular chamber between the tube 1 and cylindrical sheath Y for the ascending water, and fixing the drill-bit U upon the lower ends of tube P and sheathcylinder V, extending thereaeross, so that the descendinghydraulicstream acts directly against the bottom of the well at the point being cut by the drill-bit, and the return stream, carrying the loosened debris, passes up within the sheath and does not. operate to wear away the walls of the well close to the bottom, where the greatest agitation is. I do not extend the sheath Y to the top of the well, as its purpose is to protect the walls at the point of greatest agitation and force of stream,which is near the point of discharge of the descending stream. The sheath V also serves to guide the drill and prevent its deflection by contact with bowlders and other hard substances. By employing the short sheath V, I avoid the cramping and wedging of the well-tube which occurs by reason of earth and debris falling into the space between the casing and the walls of the well when the well-casing is used as a conduit for the water.

The-cylinder Y is fastened to the drill-tube 1 and the drill-blade U by the mechanisnr represented in Figs. 4. and 5, consisting of the clamps (l d, and the bolts which close them tightly upon the tube 1 at its lower end, one

drill-tube, and other screws or bolts passing through their flanges and the cylinder Y. Similar clamps and bolts (shown in Fig. (3 and at (l in Fig. I) are employed to connect the up- 1 per end of cylinder V with the drill-tube P.

The ends of the gear-carriage F F are provided with flanges Y to guide the carriage along the posts I) D, and friction-rolls Z are also attached to its ends to case its travel up and down the guiding-posts I) D.

jeet of the bevel-gears M N is to enable the motion of the drill to be reversed, as occasion may require, and to unscrew coupling at X to insert an additional section of the tube.

In operating my improved machine power The ob- I may be applied to the belt-wheel K, which, through gearing M or N, will revolve rectangular shaft 0 and its sliding gear-wheel G, which meshes with the counter-gear G and revolves the drill-shaft I with its appendages at the bottom, and as the drill descends in its work the carriage F F travels downward between the guideposts I) I). The wheel G at the same time slides down shaft 0. 'hen the drill has descended a distance equal to the length of the drill-section betwcen couplings 1 and 2, the upper coupling at X will be detached, and by means of windlass II the carriage F F,with the attachments Q and S,will be elevated to the position shown in Fig. 1, and an additional section of drilltube will be connected by means of the right and left hand male and female screws formed at the ends of the sections of tubing for the purpose.

The pressure upon the drill-blade caused by the gravity of the water, the drill-tube, and the carriage will be quite sufficient under most unfavorable conditions of earth through which the drill may be passing, but under all conditions of the work an attendant at the windlass can relieve the pressure of the drill. by turning the windlass to regulate the tension of the rope which sustains the carriage according to the nature of the'substances in which the drill is working. By means of the force-pump anydegree of water-pressure necessary may beapplicd to cause the material disengaged by the drill to rise up around the drill-shaft I and be floated outof the Well. The drill being broader than the diameter of the guiding-cylinder al'lows freedom of movement and ample space for the washing away of the disengaged earth. The beveled mouth of the coupling at X facilitates the entrance of the section of tube.

Having fully described my invention, I claim bolt passing through said clamps and the I and desire to secure by Letters Patent- 1. In a well-boring machine, the combination of the tubular drill-rod provided at its bottom with the cylindrical sheath open at top and bottonrand throughout its entire length fixedly attached to such rod, and the drill-bit fixedly attached to the lower end of 1 such rod and its sheath.

bination with the drill-blade U, drill tube or shaft I, and guiding-cylinder V, as described.

GROVE S. BARTHOLOMEW.

\Vitnesses:

II. P. K. PECK,

l i 2. The clamping mechanism (I (Z, in coml l t t M. G. GALES. 

